diff --git a/.github/workflows/check_copyright_year.yml b/.github/workflows/check_copyright_year.yml
index 8daea44a83..ecb487ace3 100644
--- a/.github/workflows/check_copyright_year.yml
+++ b/.github/workflows/check_copyright_year.yml
@@ -3,8 +3,8 @@ name: Check copyright year
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
 
 jobs:
   check_copyright_year:
diff --git a/.github/workflows/docker-develop.yml b/.github/workflows/docker-develop.yml
index 09a2c33e0c..56b2f0a11c 100644
--- a/.github/workflows/docker-develop.yml
+++ b/.github/workflows/docker-develop.yml
@@ -3,12 +3,18 @@ name: Publish Docker image (develop)
 on:
   push:
     branches:
-      - develop
+      - art/dev
   workflow_dispatch:
 
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
 jobs:
   push_to_registry:
     name: Push Docker image to Docker Hub
+    permissions:
+      packages: write
     runs-on: ubuntu-latest
     if: github.repository == 'misskey-dev/misskey'
     steps:
@@ -23,12 +29,14 @@ jobs:
         id: meta
         uses: docker/metadata-action@v4
         with:
-          images: misskey/misskey
-      - name: Log in to Docker Hub
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Log in to the Container registry
         uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+  
       - name: Build and Push to Docker Hub
         uses: docker/build-push-action@v4
         with:
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a465d92eaf..046006bdf6 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -5,9 +5,15 @@ on:
     types: [published]
   workflow_dispatch:
 
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+    
 jobs:
   push_to_registry:
     name: Push Docker image to Docker Hub
+    permissions:
+      packages: write
     runs-on: ubuntu-latest
 
     steps:
@@ -22,7 +28,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@v4
         with:
-          images: misskey/misskey
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=edge
             type=ref,event=pr
@@ -30,11 +36,13 @@ jobs:
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
-      - name: Log in to Docker Hub
+      - name: Log in to the Container registry
         uses: docker/login-action@v2
         with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build and Push to Docker Hub
         uses: docker/build-push-action@v4
         with:
diff --git a/.github/workflows/dockle.yml b/.github/workflows/dockle.yml
index 9b79ee54f0..b31ff5ad7c 100644
--- a/.github/workflows/dockle.yml
+++ b/.github/workflows/dockle.yml
@@ -4,8 +4,8 @@ name: Dockle
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
   pull_request:
 
 jobs:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 0f3702f958..ca34626e78 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -3,8 +3,8 @@ name: Lint
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
   pull_request:
 
 jobs:
diff --git a/.github/workflows/reviewer_lottery.yml b/.github/workflows/reviewer_lottery.yml
deleted file mode 100644
index 33228d7465..0000000000
--- a/.github/workflows/reviewer_lottery.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-name: "Reviewer lottery"
-on:
-  pull_request_target:
-    types: [opened, ready_for_review, reopened]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v1
-    - uses: uesteibar/reviewer-lottery@v2
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/storybook.yml b/.github/workflows/storybook.yml
index 6cb1b34997..07d8cfa696 100644
--- a/.github/workflows/storybook.yml
+++ b/.github/workflows/storybook.yml
@@ -5,7 +5,7 @@ on:
     branches:
       - master
       - develop
-  pull_request_target:
+  # pull_request_target:
 
 jobs:
   build:
diff --git a/.github/workflows/test-backend.yml b/.github/workflows/test-backend.yml
index d7be15bd4f..4f9f76ec87 100644
--- a/.github/workflows/test-backend.yml
+++ b/.github/workflows/test-backend.yml
@@ -3,8 +3,8 @@ name: Test (backend)
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
   pull_request:
 
 jobs:
diff --git a/.github/workflows/test-frontend.yml b/.github/workflows/test-frontend.yml
index 4ea4ba4628..3fc487b48a 100644
--- a/.github/workflows/test-frontend.yml
+++ b/.github/workflows/test-frontend.yml
@@ -3,8 +3,8 @@ name: Test (frontend)
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
   pull_request:
 
 jobs:
diff --git a/.github/workflows/test-misskey-js.yml b/.github/workflows/test-misskey-js.yml
index b15e704c7f..c7fd97b69c 100644
--- a/.github/workflows/test-misskey-js.yml
+++ b/.github/workflows/test-misskey-js.yml
@@ -5,9 +5,9 @@ name: Test (misskey.js)
 
 on:
   push:
-    branches: [ develop ]
+    branches: [ art/dev ]
   pull_request:
-    branches: [ develop ]
+    branches: [ art/dev ]
 
 jobs:
   test:
diff --git a/.github/workflows/test-production.yml b/.github/workflows/test-production.yml
index 5243a83777..28e5c4fc29 100644
--- a/.github/workflows/test-production.yml
+++ b/.github/workflows/test-production.yml
@@ -3,8 +3,8 @@ name: Test (production install and build)
 on:
   push:
     branches:
-      - master
-      - develop
+      - art/main
+      - art/dev
   pull_request:
 
 env:
diff --git a/locales/index.d.ts b/locales/index.d.ts
index eed29f408c..6ebb3d2abb 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -988,6 +988,7 @@ export interface Locale {
     "disableFederationConfirm": string;
     "disableFederationConfirmWarn": string;
     "disableFederationOk": string;
+    "contentWarningCheckRule": string;
     "invitationRequiredToRegister": string;
     "emailNotSupported": string;
     "postToTheChannel": string;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 8004e53575..1262805559 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -985,6 +985,7 @@ letsLookAtTimeline: "タイムラインを見てみる"
 disableFederationConfirm: "連合なしにしますか？"
 disableFederationConfirmWarn: "連合なしにしても投稿は非公開になりません。ほとんどの場合、連合なしにする必要はありません。"
 disableFederationOk: "連合なしにする"
+contentWarningCheckRule: "R18に相当する内容を投稿する場合は、注釈に投稿の内容に関する簡単な説明を記述してください。\n詳しくはルールをご覧ください。https://service.misskey.art"
 invitationRequiredToRegister: "現在このサーバーは招待制です。招待コードをお持ちの方のみ登録できます。"
 emailNotSupported: "このサーバーではメール配信はサポートされていません"
 postToTheChannel: "チャンネルに投稿"
diff --git a/package.json b/package.json
index dd0c1d57e7..3de1b9da22 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "13.13.2",
+	"version": "13.13.2-art_1.0",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
diff --git a/packages/backend/assets/favicon.ico b/packages/backend/assets/favicon.ico
index 9be1ff6295..b813b8cc28 100644
Binary files a/packages/backend/assets/favicon.ico and b/packages/backend/assets/favicon.ico differ
diff --git a/packages/backend/assets/favicon.png b/packages/backend/assets/favicon.png
index b4eb18a5cb..110e0e0707 100644
Binary files a/packages/backend/assets/favicon.png and b/packages/backend/assets/favicon.png differ
diff --git a/packages/backend/assets/icons/192.png b/packages/backend/assets/icons/192.png
deleted file mode 100644
index 15fd1e3731..0000000000
Binary files a/packages/backend/assets/icons/192.png and /dev/null differ
diff --git a/packages/backend/assets/icons/192art.png b/packages/backend/assets/icons/192art.png
new file mode 100644
index 0000000000..ab5c4f51bd
Binary files /dev/null and b/packages/backend/assets/icons/192art.png differ
diff --git a/packages/backend/assets/icons/512.png b/packages/backend/assets/icons/512.png
deleted file mode 100644
index f2169ec9b0..0000000000
Binary files a/packages/backend/assets/icons/512.png and /dev/null differ
diff --git a/packages/backend/assets/icons/512art.png b/packages/backend/assets/icons/512art.png
new file mode 100644
index 0000000000..9ddc462b9f
Binary files /dev/null and b/packages/backend/assets/icons/512art.png differ
diff --git a/packages/backend/assets/icons/mi-art.png b/packages/backend/assets/icons/mi-art.png
new file mode 100644
index 0000000000..9ddc462b9f
Binary files /dev/null and b/packages/backend/assets/icons/mi-art.png differ
diff --git a/packages/backend/assets/splash.png b/packages/backend/assets/splash.png
index 3430e6efe7..4d84283787 100644
Binary files a/packages/backend/assets/splash.png and b/packages/backend/assets/splash.png differ
diff --git a/packages/backend/src/server/web/manifest.json b/packages/backend/src/server/web/manifest.json
index 41171d62a1..c57fbfe5b6 100644
--- a/packages/backend/src/server/web/manifest.json
+++ b/packages/backend/src/server/web/manifest.json
@@ -7,13 +7,13 @@
 	"theme_color": "#86b300",
 	"icons": [
 		{
-			"src": "/static-assets/icons/192.png",
+			"src": "/static-assets/icons/192art.png",
 			"sizes": "192x192",
 			"type": "image/png",
 			"purpose": "maskable"
 		},
 		{
-			"src": "/static-assets/icons/512.png",
+			"src": "/static-assets/icons/512art.png",
 			"sizes": "512x512",
 			"type": "image/png",
 			"purpose": "maskable"
diff --git a/packages/frontend/assets/cookie.png b/packages/frontend/assets/cookie.png
index 4a7f040613..ce87628e8b 100644
Binary files a/packages/frontend/assets/cookie.png and b/packages/frontend/assets/cookie.png differ
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 5c65569683..6b49ef82e1 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -59,6 +59,7 @@
 			<button class="_buttonPrimary" style="padding: 4px; border-radius: 8px;" @click="addVisibleUser"><i class="ti ti-plus ti-fw"></i></button>
 		</div>
 	</div>
+	<MkInfo v-if="useCw" warn :class="$style.contentWarningCheckRule">{{ i18n.ts.contentWarningCheckRule }}</MkInfo>
 	<MkInfo v-if="hasNotSpecifiedMentions" warn :class="$style.hasNotSpecifiedMentions">{{ i18n.ts.notSpecifiedMentionWarning }} - <button class="_textButton" @click="addMissingMention()">{{ i18n.ts.add }}</button></MkInfo>
 	<input v-show="useCw" ref="cwInputEl" v-model="cw" :class="$style.cw" :placeholder="i18n.ts.annotation" @keydown="onKeydown">
 	<div :class="[$style.textOuter, { [$style.withCw]: useCw }]">
@@ -1046,6 +1047,10 @@ defineExpose({
 	background: var(--X4);
 }
 
+.contentWarningCheckRule {
+	margin: 0 20px 16px 20px;
+}
+
 .hasNotSpecifiedMentions {
 	margin: 0 20px 16px 20px;
 }